Mitsubishi Electric QD77MS User Manual page 535

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Current feed value during 1-axis speed control
The following table shows the "[Md.20] Current feed value" during 1-axis speed
control corresponding to the "[Pr.21] Current feed value during speed control"
settings.
"[Pr.21] Current feed value during speed
0: Do not update current feed value
1: Update current feed value
2: Zero clear current feed value
V
In speed control
Current feed value during speed control start is maintained
(a) Current feed value not updated
Restrictions
(1) Set "Positioning complete" in "[Da.1] Operation pattern". The error
"Continuous path control not possible" (error code: 516) will occur and the
operation cannot start if "continuous positioning control" or "continuous path
control" is set in "[Da.1] Operation pattern".
("Continuous positioning control" and "continuous path control" cannot be set
in speed control.)
(2) Set the WITH mode in "[Pr.18] M code ON signal output timing" when using an
M code. The M code will not be output, and the M code ON signal will not turn
ON if the AFTER mode is set.
(3) The error "No command speed" (error code: 503) will occur if the current
speed (-1) is set in "[Da.8] Command speed".
(4) The software stroke limit check is not carried out if the control unit is set to
"degree".
control" setting
V
In speed control
t
Current feed value is updated
(b) Current feed value updated
9 - 77
Chapter 9 Major Positioning Control
[Md.20] Current feed value
The current feed value at speed control start
is maintained.
The current feed value is updated.
The current feed value is fixed at 0.
V
t
0
(c) Current feed value zero cleared
In speed control
t

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